New Unit: He-111 Bomber

[aaglo]

I just noticed, that He-111Large.pcx has wrong background colour index (255) which makes it transparent, and thus MAGENTA in the civilopedia. Here are the new ones

The same problem is also atleast in the B-29, Bristol Beaufighter, Me-110's and Turtleship. And propably in the Gloster gladiator too...

Here's the new pcx-file